Nfluence of radiation on the thermal and mechanical properties of BISGMA / TEGDMA based nanocomposites using pre-irradiated MMT nanoparticles as filler
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2017
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
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In the present study was observed the influence of gamma radiation in thermal and mechanical properties of the
experimental dental composites based on BISGMA/TEGDMA filled with pre-irradiated MMT nanoparticles
(Cloisite® 20A). MMT nanoparticle was pre-irradiated at doses of 10, 15 and 70 kGy. As a control group MMT
nanoparticle was added in the polymeric matrix without pre-irradiation. Four formulations of experimental
nanocomposites were studied all with 50% wt of filler. The characterization of the experimental composites was
performed by means of the following techniques: Thermogravimetry Analysis (TGA), Elastic Modulus and
Flexural Strength. It was observed that the group filled with pre-irradiated nanoparticles at dose of 70 kGy
showed a delay in the decomposition temperature when compared to the control group. For elastic modulus the
results showed a proportional increase related to the dose of radiation applied in the MMT nanoparticle.
Regarding flexural strength, the groups filled with pre–irradiated nanoparticles and the control group presented
similar results.
Como referenciar
SANTOS, TAMIRIS M.R.; CAMPOS, LUIZA M.P.; SANTOS, MARIANA de J.; BOARO, LETICIA C.; PARRA, DUCLERC F. Nfluence of radiation on the thermal and mechanical properties of BISGMA / TEGDMA based nanocomposites using pre-irradiated MMT nanoparticles as filler. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/28357. Acesso em: 14 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.